Wire motion for looms



March 10, 1925. 1,528,854

H. L. SHUTTLEWORTH WIRE MOTION FOR LOOMS 'Filea Sept. 17, 1924 Patented Mar. 10, 1925.

UNITED STATES.

PATENT OFFICE.

HOWARD L. SHOTTLEWORTH, OF AMSTERDAM, NEW YORK, ASSIGNOR T0 MOHAWK CARPET MILLS, INQ, OF AMSTERDAM, NEW YORK, A CORPORATION OF NEW YORK.

WIRE MOTION FOR LOOMS.

Application filed September 1'7, 1924.

To all whom it may concern:

Be it known that I, HOWARD L. SHUTTLE- WORTH, a citizen of the United States, and residing at Amsterdam, county of Montgomery, State of New York, have invented certain new and useful Improvements in Wire Motions for Looms, of which the following is a specification.

The present invention relates to carpet looms and more particularly to the pile-wire mechanism.

The principal objects of the invention are to provide a simple and dependable mechanism for inserting and withdrawing pilewires; to provide such a mechanism which is equally suitable for two shot or three shot work without any changes except the gears; and to provide such a mechanism which gives to the wire a high velocity up to the very ends of the stroke, that is to say, both on the insertion and withdrawal of the wires.

Other objects and features of novelty will be apparent from the description taken in connection with the drawings in which:

Figure 1 is a side elevation of a mechanism constructed in accordance with the present invention, some of the parts being shown diagrammatically and I Figure 2 is a section taken substantially on the line 22 of Figure 1.

Referring to the drawings, the hopper or carriage which inserts and withdraws the wires is indicated at 10. Thishopper is shown as slidable on a guide 11.

The mechanism for sliding the hopper on its guide comprises two levers mounted with their pivots adjacent each other. One of these levers is oscillated so that it makes a stroke in one direction quicker. than in the other and this lever is connected to the other lever to transmit its motion thereto. The second lever, in addition to the motion transmitted to it from the first lever, is given an added impetus as it approaches the ends of its stroke so that the hopper is given the desired high velocity from end to end of its stroke.

As shown, the firstlever 12 is mounted for oscillation about a fixed pivot 13 and is formed with a slot 14 in which slides the rectangular block 15 carried by a crank arm 16 on a driving shaft 17; The slide block 15 is supported on a pin 18 which extends through a radial slot 19 in the crank arm 16.

Serial No. 738,234.

the pivot 13 of the first lever. This hopper lever is connected to the hopper by a short link 25 which is adjustable in length so that the position of the hopper with reference to the lever may be varied. As shown, this link 25 comprises a section 26 having an end threaded into a nut section 27.

The first or slotted lever is connected to the hopper lever by a link 28 which is ad justable in length so thatthe relative positions of these levers may be adjusted within limits. For this purpose, the link 28 is provided with a turnbuckle device 29 whereby its length may be increased or decreased.

One of the important features of the present invention is the means whereby the hopper is given a high velocity substantially to the very ends of its stroke in both directions without changing the length of lever 23 or its pivot and with a crank operated mechanism. This is accomplished by connecting the link 28 to the hopper and slotted levers in such a manner that as the levers swing to the left, as viewed in Figured, the link 82 assumes a position more nearly horizontal. This means that as the levers are swinging to the left, the turning of lever 23 from its inclined position shown in full lines to the nearly horizontal position shown in dotted lines will tend to separate the two lovers, thus giving to the hopper lever an increment of angular velocity over that transmitted to it from the slotted lever. It will be noted further that this increment of velocity becomes greater as the hopper lever approaches the end of its stroke at the left. It therefore compensates for the falling ofi' in velocity of the slotted lever at the left hand end of its oscillation.

As the two levers swing from the dotted line position of Figure 1 toward the right to the full line position, it will be noted that to the horizontal. In doing this it pulls the hopper lever 23 toward the slotted lever 12, thereby giving the hopper lever an increment of angular velocity over that transmitted thereto by the slotted lever and this increment is greatest .near the right hand end of the stroke of the hopper.

The manner of connecting the two levers, therefore, gives a mechanism wherein the hopper has the desired high velocity without too great a decrease thereof as it approaches the ends o1 its stroke. Furthermore, the mechanism is one which is equally suitable for two shot or three shot work. The only adjustment necessary to be made to switch "from two shot work to three shot work is to change the gears so that the crank shaft 17 will be properly timed with respect to the cycle of movements of the loom.

Although the invention has been described in detail, it is to be understood that it is not thus limited but it includes modifications and changes which come within the scope of the appended claims.

Having thus described my invention what I claim as new and desire to be secured by Letters Patent is:

1. A wire motion for pile tabric looms including in combination, a first lever, a second lever having a fixed pivot adjacent the pivot of the first lever, means to oscillate the first lever, the time of the swing of the lever in one direction being less than in the other, and means connecting said two lovers to transmit swinging movement from the first lever to the second, comprising a short link disposed so that it is nearly horizontal at one end of the stroke of thelirst lever and makes a substantial angle with the horizontal when at the other end of the stroke, and a hopper connected to the second lever.

2. A wire motion for pile fabric looms including in combination, a first lever, a second lever having a fixed pivot adjacent the pivot of the first lever, means to oscillate the first lever, the time of the swing or" the lever in one direction being less than in the other, and means connecting said two levers to transmit the swinging movement from the first lever to the second, comprising a short link disposed so that it is nearly horizontal at one end of the stroke of the first lever and makes a substantial angle with the horizontal when at the other end of the stroke, a hopper connected to the second lever, and means to adjust the length of said link.

A wire motion for pile fabric looms including in combination, a first lever, a second lever having a fixed pivot adjacent the pivot of the first lever, means to oscillate the first lever, the time of the swing of the lever in one direction being less than in the other, and means connecting said two levers to transmit swinging movement from the first lever to the second, comprising, a short link disposed so that it is nearly horizontal at one end of the stroke of the first lever and makes a substantial angle with the horizontal when at the other end of the stroke, a link connecting the second lever to said hopper, and means to adjust the length of said last mentioned link. I,

4. A wire motion for pile fabric looms ineluding in combination, a first lever mounted for swinging movement only, a second lever, means to oscillate the first lever, the time of a swing in one direction being less than in the other, the pivots of said levers being adjacent each other, a short link connecting said levers to transmit the swinging movementfrom the first lever to the second, the distance from the pivot off the second. lever to the pivot connection thereto of said link being less than the corresponding distance of the first lever.

5. In a wire motion for pile fabric looms, in combination, a first lever mounted for swinging movement only, a second lever, a rotatable member to oscillate said first lever, the pivots of said levers being at a lower elevation than the axis of the rotatable member and spaced less than the diameter of the throw of the rotatable member, and means connecting said two levers to transmit the swinging movement of the first to the second, comprising a short link disposed so that it is nearly horizontal at one end of the stroke of the first lever and makes a substantial angle with the horizontal when at the other end of the stroke.

6. A wire motion for pile fabric looms including in combination, a hopper lever, a lever having a longitudinal slot therein, a rotatable crank having a. pin disposed to operate in said slot to' oscillate said slotted lever, the pivots of said levers being at a lower elevation than the axis of said crank and spaced 'less than the-diameter of the throw of said crank, and ashort link connecting said levers to transmit the swinging movement of the slotted lever to the hopper lever and cause the ends of said levers remote from their pivots to be closer together at one end of their swings than at the other.

7. In a wire motion for pile iabric looms, in combination, a first lever, arsecond lever, a hopper connected with the second lever, means to oscillate the first lever so that the time of the swing in one direction is less than the time of the swing in the other direction, and means connecting said levers to transmit the swinging motion of the first lever to the second constructed and arranged to cause the angular velocity of the second lever at the ends of its swings to be greater than the angular velocity of the first lever.

In testimony whereof I hereunto aflix my signature. 7

HOVARD 'L. SHUTTLElVORTl-l.

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